Nanometer Precision
Nanometer Precision - Related Videos
11:56
Fluorescence Imaging with One-nanometer Accuracy (FIONA)
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Cited by 11 •
2014
Single fluorophores can be localized with nanometer precision using FIONA. Here a summary of the FIONA technique is reported, and how to carry out FIONA experiments is described.
10:25
Sub-nanometer Resolution Imaging with Amplitude-modulation Atomic Force Microscopy in Liquid
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Cited by 39 •
2016
We present a method for achieving sub-nanometer resolution images with amplitude-modulation (tapping mode) atomic force microscopy in liquid. The method is demonstrated on commercial atomic force microscopes. We explain the rationale behind our choices of parameters and suggest strategies for resolution optimization.
03:37
Uncertainty in Measurement: Accuracy and Precision
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2020
Scientists typically make repeated measurements of a quantity to ensure the quality of their findings and to evaluate both the precision and the accuracy of their results. Measurements are said to be precise if they yield very similar results when repeated in the same manner. A measurement is considered accurate if it yields a result that is very close to the true or the accepted value. Precise values agree with each other; accurate values agree with a true value. Suppose a quality control...
09:00
Precise, High-throughput Analysis of Bacterial Growth
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Cited by 56 •
2017
Quantitative evaluation of bacterial growth is essential to understanding microbial physiology as a systems-level phenomenon. A protocol for experimental manipulation and an analytical approach are introduced, allowing for precise, high-throughput analysis of bacterial growth, which is a key subject of interest in systems biology.
07:05
The Precision of Visual Working Memory with Delayed Estimation
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2023
Source: Laboratory of Jonathan Flombaum—Johns Hopkins University Human memory is limited. Throughout most of its history, experimental psychology has focused on investigating the discrete, quantitative limits of memory—how many individual pieces of information a person can remember. Recently, experimental psychologists have also become interested in more qualitative limits—how precisely is information stored? The concept of memory precision can be both intuitive and elusive at once. It is...
FAQs
The measurement goal determines what nanometer precision must capture. Resolving protein organization, membrane architecture, or DNA packaging emphasizes spatial arrangement, whereas tracking biomolecular interactions emphasizes changes in position over time. Positioning components adds a control objective rather than only an observation objective. Separating these aims helps researchers select an appropriate high-resolution approach and interpret what the resulting measurements represent.
These methods support different uses within nanoscale investigation. Electron microscopy and atomic force microscopy contribute to resolving fine biological structures, while fluorescence imaging can support the study of molecular movements or interactions. The most suitable method depends on whether the experiment prioritizes structural detail, movement, or localization. Nanometer precision therefore describes a measurement objective achieved through method-specific imaging strategies.
Many biological events depend on how molecules are organized and interact at very small spatial scales. Measuring protein organization, membrane architecture, DNA packaging, or biomolecular interactions can reveal structural relationships that are not apparent at larger scales. These observations help connect molecular mechanisms with cellular function, providing a basis for interpreting how nanoscale arrangements contribute to biological behavior.
A useful workflow begins by identifying whether the study must resolve a structure, track molecular movement, or position a component. Researchers then select a suitable high-resolution method, such as electron microscopy, atomic force microscopy, or fluorescence imaging, according to that objective. The resulting measurements can be used to examine organization, movement, or interactions at the relevant biological scale.
At nanoscale resolution, researchers can examine how proteins are organized, how membrane architecture is arranged, and how DNA is packaged. These are distinct forms of structural information, but each concerns the spatial relationships among biological components. Studying them can clarify how molecular arrangement relates to interactions and function, strengthening links between structural biology and broader cellular processes.
Its applications extend to molecular engineering, nanoscale drug delivery, and biosensor design. In molecular engineering, it supports the placement or control of components; in drug delivery, it contributes to work at nanoscale biological interfaces; and in biosensors, it helps investigate relevant molecular features. Together, these uses show how nanoscale measurement and control can support both research tools and biomedical technologies.